<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>活动管理</el-breadcrumb-item>
            <el-breadcrumb-item>活动列表</el-breadcrumb-item>
        </el-breadcrumb>
        
        <!-- 卡片视图区域 -->
        <el-card class="box-card">
            <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容"
                    v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search"
                        @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>
            <!-- 添加用户对话框 -->
            <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            @close="addDialogClosed"
            width="50%">
                <!-- 内容主体 -->
                <el-form :model="addForm" 
                :rules="addFormRules" 
                ref="addFormRef" 
                label-width="100px" class="demo-ruleForm">
                    <el-form-item label="用户名" prop="username">
                        <el-input v-model="addForm.username"></el-input>
                    </el-form-item>
                    <el-form-item label="密码" prop="password">
                        <el-input v-model="addForm.password"></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email">
                        <el-input v-model="addForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机" prop="mobile">
                        <el-input v-model="addForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
                <!-- 底部区域 -->
                <span slot="footer" class="dialog-footer">
                    <el-button @click="addDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="addUser">确 定</el-button>
                </span>
            </el-dialog>
            <!-- 修改用户对话框 -->
            <el-dialog
            title="修改用户信息"
            :visible.sync="editDialogVisible"
            width="50%"
            @close="editDialogClosed">
                <el-form :model="editForm" 
                :rules="editFormRules"
                ref="editFormRef"
                label-width="100px">
                    <el-form-item label="用户名">
                        <el-input v-model="editForm.username"></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email">
                        <el-input v-model="editForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="电话" prop="mobile">
                        <el-input v-model="editForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
                <span slot="footer" class="dialog-footer">
                    <el-button @click="editDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="editUserInfo">确 定</el-button>
                </span>
            </el-dialog>
            <!-- 表格区域 -->
            <el-table :data="userlist" stripe border>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态" prop="mg_state">
                    <!-- 用了插槽后就会把prop属性给覆盖-->
                    <template slot-scope="scope">
                        <!-- {{scope.row}} 可以获取到所有用户的数据 用这个方法来取得mg_state的值-->
                        <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="200px">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" 
                        icon="el-icon-delete" 
                        size="mini"
                        @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色按钮 -->
                        <el-tooltip class="item" effect="dark" content="分配角色" placement="top-start" :enterable="false">
                           <el-button 
                           type="warning" 
                           icon="el-icon-setting"
                           @click="setRole(scope.row)" 
                           size="mini"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>
            <!-- 分页区域 -->
            <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="2"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
            </el-pagination>
        </el-card>
        <!-- 分配角色 -->
        <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        @close="setRoleDialogClosed"
        width="30%">
            <div>
                <p>当前的用户： {{userInfo.username}}</p>
                <p>当前的角色： {{userInfo.role_name}}</p>
                <p>分配新角色：
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option
                        v-for="item in roleList"
                        :key="item.id"
                        :label="item.roleName"
                        :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>

    </div>
</template>

<script>
export default {
    data() {
        // 自定义验证邮箱规则
        var checkEmail = (rule, value, callback) => {
            // 验证邮箱的正则表达式
            const regEmail = /^[0-9a-zA-Z_-]+[@][0-9a-zA-Z_-]+([.][a-zA-Z]+){1,2}$/
            if(regEmail.test(value)){
                // 合法邮箱
                return callback()
            }

            callback(new Error("请输入合法邮箱"))

        }

        // 自定义验证电话号规则
        var checkMobile = (rule, value, callback) => {
            // 验证邮箱的正则表达式
            const regMobile = /^[1][1-9][0-9]{9}$/
            if(regMobile.test(value)){
                // 合法邮箱
                return callback()
            }

            callback(new Error("请输入合法电话号"))

        }
        return {
            // 获取用户列表的参数对象
            queryInfo: {
                query: '',
                pagenum: 1,  // 页码值
                pagesize: 2  // 每页显示条数
            },
            userlist: [], // 用户
            total: 0, // 总数据条数，总记录数
            // 控制添加用户的显示与隐藏
            addDialogVisible: false,
            // 添加用户表单数据
            addForm: {
                username: '',
                password: '',
                email: '',
                mobile: ''
            },
            // 添加用户验证规则
            addFormRules: {
                username: [
                    {
                        required: true, 
                        message: '请输入用户名',
                        trigger: 'blur'
                    },
                    {
                        min: 3,
                        max: 10,
                        message: '用户名长度在3~10个字符之间',
                        trigger: 'blur'
                    }
                ],
                password: [
                    {
                        required: true, 
                        message: '请输入密码',
                        trigger: 'blur'
                    },
                    {
                        min: 6,
                        max: 15,
                        message: '密码长度在6~15个字符之间',
                        trigger: 'blur'
                    }
                ],
                email: [
                    {
                        required: true, 
                        message: '请输入邮箱',
                        trigger: 'blur'
                    },
                    {   
                        validator: checkEmail,
                        trigger: 'blur'
                    }
                ],
                mobile: [
                    {
                        required: true, 
                        message: '请输入电话号',
                        trigger: 'blur'
                    },
                    {   
                        validator: checkMobile,
                        trigger: 'blur'
                    }
                ]
            },
            // 控制修改用户信息框显示与影藏
            editDialogVisible: false,
            // 获取用户ID对应的信息
            editForm: {},
            // 修改用户验证规则
            editFormRules: {
                email: [
                    {
                        required: true, 
                        message: '请输入邮箱',
                        trigger: 'blur'
                    },
                    {   
                        validator: checkEmail,
                        trigger: 'blur'
                    }
                ],
                mobile: [
                    {
                        required: true, 
                        message: '请输入电话号',
                        trigger: 'blur'
                    },
                    {   
                        validator: checkMobile,
                        trigger: 'blur'
                    }
                ]
            },
            // 分配角色框的显示与隐藏
            setRoleDialogVisible: false,
            userInfo: {},
            // 所有角色的数据列表
            roleList: [],
            // 下拉框角色的id
            selectedRoleId: ''
        }
    },
    created() {
        this.getUserList()
    },
    methods: {
        async getUserList() {
            const {data: res} = await this.$http.get('users',{params: this.queryInfo})
            console.log(res);
            if(res.meta.status != 200) return this.$message.error("获取管理员列表失败")
            this.userlist = res.data.users
            this.total = res.data.total
        },
        // 每页有多少条,监听pagesize改变的事件
        handleSizeChange(newSize) {
            console.log(newSize);
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        // 当前页，监听页码值 改变的事件
        handleCurrentChange(newPage) {
            console.log(newPage);
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        // 改变swich的开关状态
        async userStateChanged(userinfo) {
            const {data: res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            console.log(userinfo);
            console.log(res);
            if(res.meta.status !== 200){
                userinfo.mg_state = !userinfo.mg_state
                return this.$$message.error("更新用户状态失败")
            }
            return this.$message.success("更新用户状态成功")
        },
        // 监听用户框关闭事件
        addDialogClosed(){
            // resetFields() 对整个表单进行重置，将所有字段值重置为初始值并移除校验结果
            this.$refs.addFormRef.resetFields()
        },
        // 对表单进行校验
        addUser() {
            this.$refs.addFormRef.validate( async valid => {
                if(!valid) return 

                // 发起添加用户的网络请求
                const {data: res} = await this.$http.post('users',this.addForm)
                if(res.meta.status != 201)
                return this.$message.error("添加用户失败")

                this.$message.success("添加用户成功")
                // 关闭对话框
                this.addDialogVisible = false
                // 重新获取管理用户
                this.getUserList()
            }) 
        },
        // 展示编辑用户的对话框
        async showEditDialog(id) {
            console.log(id);
            const {data: res} = await this.$http.get(`users/` + id)
            console.log(res);
            if(res.meta.status !== 200)  return this.$message.error("获取用户ID数据失败")
            this.editForm = res.data
            this.editDialogVisible = true
        },
        // 监听修改用户对话框的关闭事件
        editDialogClosed() {
            this.$refs.editFormRef.resetFields()
        },
        // 修改用户信息并提交
        editUserInfo() {
            this.$refs.editFormRef.validate(async valid => {
                if(!valid) return 
                // 发起用户信息修改请求
                const {data: res} = await this.$http.put(`users/` + this.editForm.id,{
                    email: this.editForm.email,
                    mobile: this.editForm.mobile
                })
                if(res.meta.status != 200){
                    return this.$message.error("更新用户信息失败")
                }
                
                // 关闭修改用户对话框
                this.editDialogVisible = false
                // 更新数据
                this.getUserList()
                // 提示修改用户信息成功
                this.$message.success("修改用户信息成功")
            })
        },
        // 删除用户信息
        async removeUserById(id) {
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', 
            '提示', 
            {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }
            ).catch(err => err)
            // console.log(confirmResult);

            // 如果用户确认删除就返回字符串 confirm
            // 如果用户取消删除返回字符串 cancel
            if(confirmResult !== 'confirm'){
                return this.$message.info("已取消删除")
            }
            // console.log("删除成功");

            const {data: res} = await this.$http.delete(`users/` + id)
            if(res.meta.status != 200){
                return this.$message.error("删除用户失败")
            }
            this.getUserList()
            this.$message.success("删除用户成功")
        },
        // 分配角色
        async setRole(userInfo) {
            this.userInfo = userInfo

            const {data: res} = await this.$http.get('roles')
            if(res.meta.status !== 200){
                return this.$message.error("分配角色失败")
            }
            this.roleList = res.data
            console.log(this.roleList);
            this.setRoleDialogVisible = true
        },
        // 点击按钮，分配角色
        async saveRoleInfo() {
            if(!this.selectedRoleId) {
                this.$message.error("请选择要修改的角色名称")
            }
            const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`,{
                rid: this.selectedRoleId
            })
            if(res.meta.status !== 200){
                return this.$message.error("设置角色失败")
            }
            this.$message.success("设置角色成功")
            this.getUserList()
            this.setRoleDialogVisible = false
        },
        // 监听分配角色关闭事件
        setRoleDialogClosed() {
            this.selectedRoleId = ''
            this.userInfo = []
        }
    },
}
</script>

<style lang="less" scoped>
.el-card{
    border-radius: 0 1px 1px rgba(0, 0, 0, 0.15);
}
</style>